Urban low-carbon and near-zero-carbon analysis method and system based on life cycle evaluation

Abstract

The invention discloses an urban low-carbon and near-zero-carbon analysis method and system based on life cycle evaluation, and relates to the technical field of urban ecological evaluation and management, and the method comprises the steps: carrying out the statistics of an urban building region, obtaining each carbon emission site, collecting the building planning data and life cycle carbon emission data of each carbon emission site, and carrying out the calculation of the building planning data and the life cycle carbon emission data; urban carbon emission influence parameters are obtained; processing according to the urban carbon emission influence parameters to obtain an urban building carbon emission threshold value of each stage, and correcting the urban building carbon emission threshold value of each stage according to the building planning data of each carbon emission site to obtain a carbon emission degree evaluation threshold value of each carbon emission site in the current stage; and processing according to the life cycle carbon emission data of each carbon emission site to obtain a carbon emission degree evaluation value of each carbon emission site in the current stage, and carrying out carbon emission early warning according to the carbon emission degree evaluation value of each carbon emission site in the current stage and the carbon emission degree evaluation threshold value of each carbon emission site in the current stage.

Description

Technical Field

[0001] The present invention relates to the technical field of urban ecological evaluation and management, and specifically to a method and system for urban low-carbon and near-zero-carbon analysis based on life cycle assessment. Background Art

[0002] With the continuous advancement of the global urbanization process and the gradual improvement of people's living quality, the consumption of urban resources and environmental pressure are increasing continuously, which prompts the urban development model to shift towards low-carbon and near-zero-carbon directions to achieve the goal of sustainable development. Big data technology is one of the key supports for urban intelligent management, used to improve the efficiency of urban operation and the scientificity of decision-making. The rise of emerging technologies such as the Internet of Things, blockchain, and artificial intelligence provides new perspectives and means for urban low-carbon and near-zero-carbon analysis based on life cycle assessment, making the analysis more comprehensive and in-depth.

[0003] For example, the invention patent with the publication number CN107016511A discloses a urban low-carbon development management system, including an index module of a data collection device and a data collection module; an encryption module for classifying, calculating, and analyzing the data under the index module; an early warning module including a main processor, a radio frequency module, a voltage stabilizing module, and a voice broadcast system; a display module for displaying the corresponding data and technical evaluation under the index module and the encryption module; and a circuit module including a PCB circuit board, wires, a power output port, a power interface, a voltage regulator, and a backup power supply device; the urban low-carbon development management system performs steps such as data acquisition, classification, calculation, analysis and early warning, display, and evaluation on the required indicators, performs encryption calculation and analysis on the data obtained by the urban low-carbon management system, obtains the level of urban low-carbon development, and gives early warning of abnormal data.

[0004] For example, the invention patent with the publication number CN115952964A discloses a method and device for planning intelligent perception devices for an energy Internet, including: constructing an optimization planning mathematical model of intelligent perception devices based on the life cycle cost of zero-carbon parks / low-carbon cities intelligent perception devices for the energy Internet; optimizing decision variables using the Harris hawk optimization algorithm according to the optimization planning mathematical model of intelligent perception devices; when the decision variables reach the maximum number of iterations, the algorithm terminates, and the optimal solution of the decision variables when the algorithm terminates is determined as the optimal intelligent perception device planning scheme, and the actual planning of intelligent perception devices is carried out.

[0005] However, in the process of implementing the inventive technical solution in the embodiments of the present application, it is found that the above technologies have at least the following technical problems: in practical applications, due to the imperfect carbon emission data monitoring technology, the accuracy and timeliness of data collection may be insufficient, and further the accuracy and effectiveness of the carbon emission early warning system are affected. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a method and system for urban low-carbon and near-zero-carbon analysis based on life cycle assessment, which can effectively solve the problems involved in the above-mentioned background art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: In the first aspect of the present invention, a method for urban low-carbon and near-zero-carbon analysis based on life cycle assessment is provided, including: counting urban building areas to obtain each carbon emission site, collecting the building planning data and life cycle carbon emission data of each carbon emission site, and obtaining urban carbon emission impact parameters, where the life cycle carbon emission data includes carbon emission data in the construction stage and carbon emission data in the operation stage.

[0008] Processing the urban carbon emission impact parameters to obtain the carbon emission thresholds of urban buildings in each stage, and correcting the carbon emission thresholds of urban buildings in each stage according to the building planning data of each carbon emission site to obtain the carbon emission degree evaluation thresholds of each carbon emission site in the current stage.

[0009] Processing the life cycle carbon emission data of each carbon emission site to obtain the carbon emission degree evaluation value of each carbon emission site in the current stage, and performing carbon emission early warning according to the carbon emission degree evaluation value of each carbon emission site in the current stage and the carbon emission degree evaluation threshold of each carbon emission site in the current stage.

[0010] As a further method, the process of collecting the building planning data and life cycle carbon emission data of each carbon emission site and obtaining urban carbon emission impact parameters is as follows: The building planning data includes the building construction floor area and the average building construction height; the urban carbon emission impact parameters include the population quantity, the urban area, and the building floor area; the carbon emission data in the construction stage includes the energy consumption of raw material production, the number of transportation vehicle scheduling, the power consumption of construction equipment, and the operation time of construction equipment; the carbon emission data in the operation stage includes the electricity consumption, the number of repairs, and the repair energy consumption.

[0011] As a further method, the process of processing the urban carbon emission impact parameters to obtain the carbon emission thresholds of urban buildings in each stage is as follows: Obtaining the critical population quantity, the critical urban area, the critical population density, and the critical building density from the urban carbon emission database; comprehensively analyzing according to the urban carbon emission impact parameters to obtain the urban building carbon emission index, where the urban building carbon emission index is used to quantitatively evaluate the reference carbon emission level of urban buildings; and matching the carbon emission thresholds of urban buildings in each stage according to the urban building carbon emission index.

[0012] As a further method, the building planning data of each carbon emission site is used to correct the urban building carbon emission thresholds at each stage, so as to obtain the carbon emission degree evaluation thresholds of each carbon emission site at the current stage. The specific analysis process is as follows: Obtain the floor area of the critical building construction and the average height of the critical building construction from the urban carbon emission database; Process the building planning data to obtain the building planning construction scale evaluation values of each carbon emission site; Correct the urban building carbon emission thresholds at each stage according to the building planning construction scale evaluation values of each carbon emission site, so as to obtain the carbon emission degree evaluation thresholds of each carbon emission site at the current stage.

[0013] As a further method, the life cycle carbon emission data of each carbon emission site is processed to obtain the carbon emission degree evaluation values of each carbon emission site at the current stage. The specific analysis process is as follows: Obtain the life cycle stage to which each carbon emission site belongs; If the life cycle stage to which a carbon emission site belongs is the construction stage, process the carbon emission data of the construction stage of the carbon emission site to obtain the carbon emission degree evaluation value of the carbon emission site at the current stage; If the life cycle stage to which a carbon emission site belongs is the operation stage, process the carbon emission data of the operation stage of the carbon emission site to obtain the carbon emission degree evaluation value of the carbon emission site at the current stage; Statistically obtain the carbon emission degree evaluation values of each carbon emission site at the current stage, and the carbon emission degree evaluation values are used to quantitatively evaluate the carbon emission level of the carbon emission site in a certain life cycle stage.

[0014] As a further method, the carbon emission data of the construction stage of the carbon emission site is processed to obtain the carbon emission degree evaluation value of the carbon emission site at the current stage. The specific analysis process is as follows: Obtain the critical raw material production energy consumption, the number of critical transportation vehicle schedules, the critical construction equipment power consumption, and the critical construction equipment operation time from the urban carbon emission database; Based on the carbon emission data of the construction stage of each carbon emission site, comprehensively analyze to obtain the carbon emission degree evaluation value of each carbon emission site at the current stage.

[0015] As a further method, the carbon emission data of the operation stage of the carbon emission site is processed to obtain the carbon emission degree evaluation value of the carbon emission site at the current stage. The specific analysis process is as follows: Obtain the critical power consumption, the number of critical maintenance times, and the critical maintenance energy consumption from the urban carbon emission database; Based on the carbon emission data of the operation stage of each carbon emission site, comprehensively analyze to obtain the carbon emission degree evaluation value of each carbon emission site at the current stage.

[0016] As a further method, carbon emission early warning is carried out according to the carbon emission degree evaluation value of each carbon emission site in the current stage and the carbon emission degree evaluation threshold of each carbon emission site in the current stage. The specific analysis process is as follows: compare the carbon emission degree evaluation value of each carbon emission site in the current stage with the carbon emission degree evaluation threshold of each carbon emission site in the current stage; if the carbon emission degree evaluation value of a certain carbon emission site in the current stage is greater than or equal to the carbon emission degree evaluation threshold of the carbon emission site in the current stage, mark this carbon emission site as a high carbon emission site; if the carbon emission degree evaluation value of a certain carbon emission site in the current stage is less than the carbon emission degree evaluation threshold of the carbon emission site in the current stage, mark this carbon emission site as a low carbon emission site; count each high carbon emission site and give an early warning to the high carbon emission sites.

[0017] The second aspect of the present invention provides a system for analyzing urban low-carbon and near-zero carbon based on life cycle assessment, including: a data acquisition module, which is used to count the urban building areas to obtain each carbon emission site, collect the building planning data and life cycle carbon emission data of each carbon emission site, and obtain urban carbon emission impact parameters. The life cycle carbon emission data includes carbon emission data in the construction stage and carbon emission data in the operation stage.

[0018] A threshold correction module, which is used to process the urban carbon emission impact parameters to obtain the urban building carbon emission thresholds in each stage, and correct the urban building carbon emission thresholds in each stage according to the building planning data of each carbon emission site to obtain the carbon emission degree evaluation threshold of each carbon emission site in the current stage.

[0019] An evaluation and early warning module, which is used to process the life cycle carbon emission data of each carbon emission site to obtain the carbon emission degree evaluation value of each carbon emission site in the current stage, and carry out carbon emission early warning according to the carbon emission degree evaluation value of each carbon emission site in the current stage and the carbon emission degree evaluation threshold of each carbon emission site in the current stage.

[0020] Compared with the prior art, the embodiments of the present invention have at least the following beneficial effects:

[0021] (1) By providing a method and system for analyzing urban low-carbon and near-zero carbon based on life cycle assessment, the present invention realizes the refined quantitative analysis of the carbon emission degree of urban buildings, changes the judgment of the carbon emission level from a vague qualitative understanding to an accurate numerical determination, improves the accuracy and reliability of carbon emission assessment, provides a solid data support for the energy conservation and emission reduction decisions of urban planning and the construction industry, and further promotes the realization of urban sustainable development goals and the green transformation of the construction industry.

[0022] (2) The present invention calculates the carbon emission degree evaluation value by comprehensively considering the building planning data, life cycle carbon emission data, and urban carbon emission impact parameters, covering the key factors affecting urban building carbon emissions, making the carbon emission assessment more systematic and in-depth, being able to accurately locate the building sites and stages with excessive carbon emissions, providing detailed basis for formulating targeted energy conservation and emission reduction strategies, reducing building carbon emissions from the source, and optimizing the urban energy utilization structure.

[0023] (3) The present invention compares with a preset carbon emission degree evaluation threshold, and timely warns and statistics the high carbon emission sites exceeding the threshold, constructs a set of efficient and dynamic carbon emission control mechanisms, realizes the real-time monitoring and active intervention of urban building carbon emissions, reduces the potential risks of carbon emission exceeding the standard and the negative environmental impacts, improves the efficiency and effect of urban building carbon emission management, and guarantees the quality of the urban ecological environment and the living quality of residents.

[0024] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic flow chart of the method of the present invention.

[0026] Figure 2 It is a schematic diagram of the connection of system modules of the present invention.

[0027] Figure 3 It is a schematic diagram of the functional relationship between the floor area of building construction and the evaluation value of building planning construction scale of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] Reference Figure 1 As shown, the first aspect of the present invention provides a method for urban low-carbon and near-zero-carbon analysis based on life cycle assessment, including: counting urban building areas to obtain each carbon emission site, collecting building planning data and life cycle carbon emission data of each carbon emission site, and obtaining urban carbon emission impact parameters, where the life cycle carbon emission data includes carbon emission data in the construction stage and carbon emission data in the operation stage.

[0031] Specifically, collecting building planning data and life cycle carbon emission data of each carbon emission site, and obtaining urban carbon emission impact parameters, the specific analysis process is as follows: the building planning data includes the building construction floor area and the average building construction height; the urban carbon emission impact parameters include the population number, the urban area, and the building floor area; the carbon emission data in the construction stage includes raw material production energy consumption, the number of transportation vehicle scheduling, the power consumption of construction equipment, and the operation time of construction equipment; the carbon emission data in the operation stage includes the electricity consumption, the number of repairs, and the repair energy consumption.

[0032] In this embodiment, the data of the urban building area is counted and analyzed to determine all carbon emission sites in the urban building area, and the relevant data or parameters corresponding to each carbon emission site are collected.

[0033] It should be understood that in this embodiment, the floor area of building construction refers to the floor area planned for the building area. The average height of building construction refers to the overall height planned for the buildings in the building area. The population quantity refers to the number of residents in the city, which affects the energy consumption and carbon emission levels. The urban area refers to the total area of the city, which is used to evaluate the scale and population density of the city. The floor area of buildings refers to the total ground area occupied by all buildings in the city, reflecting the building density and land use situation of the city. The energy consumption for raw material production refers to the total energy consumed in the production of building materials, including, for example, electricity, coal, natural gas, etc. Clearly define the energy types of energy consumption, such as electricity, coal, natural gas, etc. For each energy type, collect the specific consumption data during its use. The energy consumption data can be obtained through channels such as energy metering instruments and production records. Convert the consumption of various energy types into the consumption of standard coal, and add up all the converted energy consumptions to obtain the total energy consumed in the production of building materials (usually in tons of standard coal). For example, in the process of producing building materials, if two energy types, electricity and coal, are used, the consumption data of these two energy types can be collected separately, then converted into the consumption of standard coal, and finally the converted consumptions are added up to obtain the total energy consumption. The number of transportation vehicle dispatching refers to the number of vehicles required to transport building materials. The operation time of construction equipment refers to the cumulative operation time of construction equipment during the construction stage. The electricity consumption refers to the electricity consumption of the building during the operation stage. The number of repairs refers to the number of times the building is maintained and repaired. The energy consumption for repairs refers to the total energy consumed cumulatively in building repairs. Identify all energy types used during the repair process, such as electricity, natural gas, diesel, etc., and collect the energy consumption data. The energy consumption data for repairs can be obtained by using energy metering instruments to record the consumption of various energies during the repair process or a carbon emission calculator. Convert the consumption of different energy types into a unified unit, such as standard coal or kilowatt-hours, and add up all the converted energy consumptions to obtain the total energy consumed during the repair process (the result can be expressed in tons of standard coal or the total number of kilowatt-hours).

[0034] The carbon emission thresholds of urban buildings at each stage are processed based on the urban carbon emission impact parameters, and the carbon emission thresholds of urban buildings at each stage are corrected according to the building planning data of each carbon emission site to obtain the carbon emission degree evaluation thresholds of each carbon emission site at the current stage.

[0035] Specifically, the carbon emission thresholds of urban buildings at each stage are processed based on the urban carbon emission impact parameters. The specific analysis process is as follows: Obtain the critical population quantity, critical urban area, critical population density, and critical building density from the urban carbon emission database; Based on the urban carbon emission impact parameters, comprehensively analyze to obtain the urban building carbon emission index, and the urban building carbon emission index is used to quantitatively evaluate the reference carbon emission level of urban buildings.

[0036] It should be understood that in this embodiment, the population quantity can be obtained through a census, government statistical data, or a population prediction model. The urban area can be obtained through GIS (Geographic Information System), urban planning drawings, or government statistical data. The building floor area can be obtained through methods such as GIS, building design drawings, on-site measurement, or urban planning drawings. The critical population quantity, critical urban area, critical population density, and critical building density are directly obtained from the urban carbon emission database.

[0037] In a specific embodiment, the way to obtain the urban building carbon emission index is as follows:

[0038]

[0039] In the formula, Z represents the urban building carbon emission index, e represents the natural constant, A1 represents the population quantity, B1 represents the urban area, C1 represents the population density, V1 represents the building floor area, M1 represents the building density, A0 represents the preset critical population quantity, B0 represents the preset critical urban area, C0 represents the preset critical population density, M0 represents the preset critical building density, μ1 represents the influence weight of the urban building carbon emission assessment corresponding to the preset population quantity, μ2 represents the influence weight of the urban building carbon emission assessment corresponding to the preset urban area, μ3 represents the influence weight of the urban building carbon emission assessment corresponding to the preset population density, and μ4 represents the influence weight of the urban building carbon emission assessment corresponding to the preset building density.

[0040] When performing the urban building carbon emission assessment, μ1, μ2, μ3, and μ4 can directly obtain the influence weights of the urban building carbon emission assessment corresponding to the population quantity, urban area, population density, and building density from the urban carbon emission database. These weight values respectively reflect their influence degrees on the urban building carbon emission index, and there is a preset mapping rule between their corresponding relationships. For example, the area of urban carbon emissions forms a mapping set with the influence weights of the urban building carbon emission assessment corresponding to the population quantity, urban area, population density, and building density obtained from the urban carbon emission database. Inputting the area of urban carbon emissions into the mapping set can obtain the influence weights of the urban building carbon emission assessment corresponding to the population quantity, urban area, population density, and building density. The mapping method can be either one-to-one or many-to-one. In this example, the value range of the weight is limited between 0 and 1 (excluding 0 and 1).

[0041] In this embodiment, the urban building carbon emission index is used to quantitatively evaluate the reference carbon emission level of urban buildings. The smaller the population quantity, the smaller the urban area, the smaller the population density, and the smaller the building density, the lower the urban building carbon emission index and the lower the reference carbon emission level of urban buildings.

[0042] The algorithm of this embodiment combines the population quantity, urban area, population density, and building density, and comprehensively analyzes to obtain the urban building carbon emission index. In this formula, the population quantity, urban area, population density, and building density influence each other. When the urban area is fixed, an increase in the population quantity will lead to an increase in the population density; conversely, a decrease in the population quantity will cause the population density to decrease. The population density is the ratio of the population quantity to the urban area, reflecting the population quantity per unit area. When the urban area remains unchanged, an increase in the population quantity will result in an increase in the population density; conversely, a decrease in the population quantity will lead to a decrease in the population density. The building density refers to the ratio of the floor area of buildings in the city to the total urban area, reflecting the utilization degree of urban space. When the urban area remains unchanged, the larger the building density, the more buildings are constructed, and the residential and commercial spaces meet the needs of population growth, and the population density will be greater. By comprehensively analyzing the population quantity, urban area, population density, and building density, the urban building carbon emission index can be accurately obtained, which quantitatively reflects the carbon emission reference level and expected situation of the overall urban buildings.

[0043] The carbon emission thresholds of urban buildings at each stage are obtained by matching according to the urban building carbon emission index.

[0044] It should be understood that in this embodiment, by establishing a mapping set between the urban building carbon emission index interval and the carbon emission thresholds of urban buildings at each stage, the carbon emission indexes of urban buildings at each stage are obtained. The carbon emission indexes of urban buildings at each stage are input into the mapping set to obtain the carbon emission thresholds of urban buildings at each stage corresponding to the urban building carbon emission index intervals to which the carbon emission indexes of urban buildings at each stage belong.

[0045] Specifically, the carbon emission thresholds of urban buildings at each stage are corrected according to the building planning data of each carbon emission site to obtain the carbon emission degree evaluation thresholds of each carbon emission site at the current stage. The specific analysis process is as follows: Obtain the critical building construction floor area and the average height of critical building construction from the urban carbon emission database; process the building planning data to obtain the building planning construction scale evaluation value of each carbon emission site.

[0046] It should be understood that in this embodiment, the building construction floor area is obtained through on-site measurement, building design drawings, or a geographic information system (GIS). The average height of building construction can be obtained through building design drawings, on-site measurement, or drone aerial photography, etc. The critical building construction floor area and the average height of critical building construction are directly obtained from the urban carbon emission database.

[0047] In a specific embodiment, the method for obtaining the building planning construction scale evaluation value of each carbon emission site is as follows:

[0048]

[0049] Wherein, K i represents the evaluation value of the building planning and construction scale of the i-th carbon emission site, e represents the natural constant, and G i represents the building construction floor area of the i-th carbon emission site, and H i represents the average building height of the i-th carbon emission site. G0 represents the preset critical building construction floor area, H0 represents the preset critical average building height, ρ1 represents the influence weight of the building construction floor area on the evaluation of the building planning and construction scale, ρ2 represents the influence weight of the average building height on the evaluation of the building planning and construction scale, i represents the number of the carbon emission site, i = 1, 2, 3,..., m, and m represents the total number of carbon emission sites.

[0050] In a specific embodiment, as Figure 3 shown, ρ1 = ρ2 = 0.5, G0 = 3000m 2 , H0 = 60m. When H i = 20m, the functional relationship between the building construction floor area and the evaluation value of the building planning and construction scale is as shown by curve a; when H i = 40m, the functional relationship between the building construction floor area and the evaluation value of the building planning and construction scale is as shown by curve b; when H i = 80m, the functional relationship between the building construction floor area and the evaluation value of the building planning and construction scale is as shown by curve c.

[0051] When performing the evaluation of the building planning and construction scale, ρ1 and ρ2 can directly obtain the influence weights of the carbon emission degree of the carbon emission sites corresponding to the building construction floor area and the average building height in the current stage from the urban carbon emission database. These weight values respectively reflect their influence degrees on the evaluation value of the building planning and construction scale, and there is a preset mapping rule between their corresponding relationships. For example, the area of urban carbon emissions forms a mapping set with the influence weights of the carbon emission degree of the carbon emission sites corresponding to the building construction floor area and the average building height obtained from the urban carbon emission database in the current stage. Inputting the area of urban carbon emissions into the mapping set can obtain the influence weights of the carbon emission degree of the carbon emission sites corresponding to the building construction floor area and the average building height in the current stage. The mapping method can be either one-to-one or many-to-one. In this example, the value range of the weights is limited between 0 and 1 (excluding 0 and 1).

[0052] In this embodiment, the evaluation value of the building planning and construction scale is mainly used to quantitatively evaluate the size of the building planning and construction scale. The larger the building construction floor area or the higher the average building height, the larger the corresponding evaluation value of the building planning and construction scale, indicating that the building planning and construction scale is larger.

[0053] The algorithm of this embodiment combines the floor area of building construction and the average height of building construction, and comprehensively analyzes to obtain the evaluation value of the construction scale of building planning. In this formula, the floor area of building construction and the average height of building construction affect each other. When the floor area of building construction is larger, in order to make full use of land resources or meet the building function requirements, the average height of building construction will also be higher. For example, in the commercial business district in the city center, with the scarcity of land resources and the increase in commercial value, developers tend to build higher buildings on a larger floor area to increase the usable area and commercial value of the building. By comprehensively analyzing the floor area of building construction and the average height of building construction, the evaluation value of the construction scale of building planning can be accurately obtained, which quantitatively reflects the comprehensive scale volume of the building in the spatial dimension.

[0054] According to the evaluation value of the construction scale of building planning at each carbon emission site, the carbon emission threshold of urban buildings at each stage is corrected to obtain the evaluation threshold of the carbon emission degree at each carbon emission site in the current stage.

[0055] It should be understood that in this embodiment, a mapping set is established between the evaluation value interval of the construction scale of building planning and the correction value of the carbon emission threshold of urban buildings at each stage. The evaluation value of the construction scale of building planning at each carbon emission site is obtained, and the evaluation value of the construction scale of building planning at each carbon emission site is input into the mapping set to obtain the correction value of the carbon emission threshold of urban buildings at each stage corresponding to the evaluation value interval of the construction scale of building planning to which the evaluation value of the construction scale of building planning at each carbon emission site belongs. The correction value of the carbon emission threshold of urban buildings at each stage at each carbon emission site is added to the carbon emission threshold of urban buildings at each stage to obtain the evaluation threshold of the carbon emission degree at each carbon emission site at each stage, and the evaluation threshold of the carbon emission degree at each carbon emission site in the current stage is extracted from it.

[0056] According to the life cycle carbon emission data of each carbon emission site, the evaluation value of the carbon emission degree at each carbon emission site in the current stage is processed, and carbon emission early warning is carried out according to the evaluation value of the carbon emission degree at each carbon emission site in the current stage and the evaluation threshold of the carbon emission degree at each carbon emission site in the current stage.

[0057] Specifically, the evaluation value of the carbon emission degree of each carbon emission site at the current stage is obtained based on the life cycle carbon emission data of each carbon emission site. The specific analysis process is as follows: Obtain the life cycle stage to which each carbon emission site belongs; if the life cycle stage to which a carbon emission site belongs is the construction stage, then the evaluation value of the carbon emission degree of this carbon emission site at the current stage is obtained based on the carbon emission data of this carbon emission site in the construction stage; if the life cycle stage to which a carbon emission site belongs is the operation stage, then the evaluation value of the carbon emission degree of this carbon emission site at the current stage is obtained based on the carbon emission data of this carbon emission site in the operation stage; statistically obtain the evaluation values of the carbon emission degrees of each carbon emission site at the current stage, and the evaluation value of the carbon emission degree is used to quantitatively evaluate the carbon emission level of the carbon emission site in a certain life cycle stage.

[0058] It should be understood that in this embodiment, the construction stage is the process of building from scratch, and the operation stage is the long stage after the building is completed and put into use. The number of transportation vehicle schedules can be obtained through the scheduling records of transportation companies, logistics management systems or transportation plans of construction projects. The power consumption of construction equipment can be obtained through the rated power labels of construction equipment, energy management systems or electricity consumption records of power companies. The operation time of construction equipment can be obtained through construction logs, project management software or on-site monitoring equipment. The electricity consumption can be obtained through the electricity meter readings of buildings, energy management systems or electricity consumption records of power companies. The number of repairs is obtained through building maintenance records, property management software or service records of repair companies. The life cycle evaluation value, critical raw material production energy consumption, critical number of transportation vehicle schedules, critical power consumption of construction equipment, critical operation time of construction equipment, critical electricity consumption, critical number of repairs and critical repair energy consumption are directly obtained from the urban carbon emission database.

[0059] In a specific embodiment, the method for obtaining the evaluation value of the carbon emission degree of each carbon emission site at the current stage is as follows:

[0060]

[0061] In the formula, γ i represents the evaluation value of the carbon emission degree of the i-th carbon emission site at the current stage, e represents the natural constant, K i represents the evaluation value of the building planning and construction scale of the i-th carbon emission site, α i represents the life cycle stage to which the i-th carbon emission site belongs. When α i = 0, it means that the life cycle stage to which the i-th carbon emission site belongs is the construction stage. When α i = 1, it means that the life cycle stage to which the i-th carbon emission site belongs is the operation stage, S i represents the raw material production energy consumption of the i-th carbon emission site, N iDenotes the number of transportation vehicle scheduling at the \(i\)-th carbon emission site, \(W\) it Denotes the power consumption of the \(t\)-th construction equipment at the \(i\)-th carbon emission site, \(T\) it Denotes the operation time of the \(t\)-th construction equipment at the \(i\)-th carbon emission site. \(S_0\) represents the preset critical raw material production energy consumption, \(N_0\) represents the preset critical number of transportation vehicle scheduling, \(W_0\) represents the preset critical power consumption of construction equipment, \(T_0\) represents the preset critical operation time of construction equipment, \(\varepsilon_1\) represents the carbon emission data index impact weight corresponding to the preset raw material production energy consumption, \(\varepsilon_2\) represents the carbon emission data index impact weight corresponding to the preset number of transportation vehicle scheduling, \(\varepsilon_3\) represents the carbon emission data index impact weight corresponding to the preset power consumption of construction equipment, \(\varepsilon_4\) represents the carbon emission data index impact weight corresponding to the preset operation time of construction equipment, \(\varepsilon_5\) represents the carbon emission data index impact weight corresponding to the construction stage of the preset building planning and construction scale evaluation value, \(D\) i Denotes the power consumption at the \(i\)-th carbon emission site, \(X\) i Denotes the number of repairs at the \(i\)-th carbon emission site, \(Y\) i Denotes the repair energy consumption at the \(i\)-th carbon emission site. \(D_0\) represents the preset critical power consumption, \(X_0\) represents the preset critical number of repairs, \(Y_0\) represents the preset critical repair energy consumption Represents the carbon emission data index impact weight corresponding to the preset power consumption Represents the carbon emission data index impact weight corresponding to the preset number of repairs Represents the carbon emission data index impact weight corresponding to the preset repair energy consumption Represents the carbon emission data index impact weight corresponding to the operation stage of the preset building planning and construction scale evaluation value. \(i\) represents the number of the carbon emission site, \(i = 1, 2, 3, \cdots, m\), \(m\) represents the total number of carbon emission sites, \(t\) represents the number of the construction equipment, \(t = 1, 2, 3, \cdots, k\), \(k\) represents the total number of construction equipment

[0062] When evaluating the carbon emission level during the construction stage, ε1, ε2, ε3, ε4, and ε5 can directly obtain from the urban carbon emission database the impact weight coefficients of carbon emission data indices corresponding to the energy consumption of raw material production, the number of transportation vehicle schedules, the power consumption of construction equipment, the operating time of construction equipment, and the evaluation value of the building planning and construction scale during the construction stage. These weight values respectively reflect their influence on the evaluation value of the carbon emission level during the construction stage, and there is a preset mapping rule between their corresponding relationships. For example, the area of urban carbon emissions forms a mapping set with the impact weight coefficients of carbon emission data indices corresponding to the energy consumption of raw material production, the number of transportation vehicle schedules, the power consumption of construction equipment, the operating time of construction equipment, and the evaluation value of the building planning and construction scale obtained from the urban carbon emission database. Inputting the area of urban carbon emissions into the mapping set can obtain the impact weight coefficients of carbon emission data indices corresponding to the energy consumption of raw material production, the number of transportation vehicle schedules, the power consumption of construction equipment, the operating time of construction equipment, and the evaluation value of the building planning and construction scale. The mapping method can be either one-to-one or many-to-one. In this example, the value range of the weight is limited between 0 and 1 (excluding 0 and 1).

[0063] When evaluating the carbon emission level during the operation stage, and can directly obtain from the urban carbon emission database the impact weight coefficients of carbon emission data indices corresponding to the electricity consumption, the number of repairs, the energy consumption of repairs, and the evaluation value of the building planning and construction scale during the operation stage. These weight values respectively reflect their influence on the evaluation value of the carbon emission level during the operation stage, and there is a preset mapping rule between their corresponding relationships. For example, the area of urban carbon emissions forms a mapping set with the impact weight coefficients of carbon emission data indices corresponding to the electricity consumption, the number of repairs, the energy consumption of repairs, and the evaluation value of the building planning and construction scale obtained from the urban carbon emission database. Inputting the area of urban carbon emissions into the mapping set can obtain the impact weight coefficients of carbon emission data indices corresponding to the electricity consumption, the number of repairs, and the energy consumption of repairs. The mapping method can be either one-to-one or many-to-one. In this example, the value range of the weight is limited between 0 and 1 (excluding 0 and 1).

[0064] In this embodiment, the carbon emission degree evaluation value is used to quantitatively evaluate the carbon emission level of the carbon emission site in a certain life cycle stage. When evaluating the carbon emission degree during the construction stage, the more energy consumed in raw material production, or the larger the number of transportation vehicle schedules, or the greater the electrical power of construction equipment, or the longer the operation time of construction equipment, or the larger the evaluation value of the building planning and construction scale, the higher the corresponding carbon emission degree evaluation value, indicating that the carbon emission level of the carbon emission site during the construction stage is higher. When evaluating the carbon emission degree during the operation stage, the greater the electricity consumption, or the more maintenance times, or the greater the energy consumption for maintenance, or the larger the evaluation value of the building planning and construction scale, the higher the corresponding carbon emission degree evaluation value, indicating that the carbon emission level of the carbon emission site during the operation stage is higher.

[0065] The algorithm of this embodiment combines the energy consumption in raw material production, the number of transportation vehicle schedules, the electrical power of construction equipment, the operation time of construction equipment, and the evaluation value of the building planning and construction scale, and comprehensively analyzes to obtain the carbon emission degree evaluation value during the construction stage. In this formula, the energy consumption in raw material production, the number of transportation vehicle schedules, the electrical power of construction equipment, the operation time of construction equipment, and the evaluation value of the building planning and construction scale affect each other. The more energy consumed in raw material production means that the greater the quantity of raw materials to be transported, then more transportation vehicles are needed to transport these materials to the construction site, and the number of transportation vehicle schedules is also larger, with a greater carbon emission. When the energy consumption in raw material production is large, it indicates a large building scale or a complex production process of building materials, which will result in a greater electrical power of construction equipment at the construction site and a longer operation time of the equipment. For example, producing a large amount of concrete requires more energy consumption, and pouring this concrete at the construction site requires a concrete mixer with a large power, and the operation time of the mixer will also be longer. The larger the number of transportation vehicle schedules, it shows that the supply of building materials is sufficient and frequent, and the construction equipment at the construction site can work continuously. The longer the operation time of the construction equipment, quickly unloading and handling a large amount of building materials, the greater the electrical power of the construction equipment, such as large cranes, etc. By comprehensively analyzing the energy consumption in raw material production, the number of transportation vehicle schedules, the electrical power of construction equipment, the operation time of construction equipment, and the evaluation value of the building planning and construction scale, the carbon emission degree evaluation value during the construction stage can be accurately obtained, quantitatively reflecting the carbon emission intensity of the carbon emission site during the construction stage.

[0066] The algorithm of this embodiment combines the electricity consumption, the number of repairs, the energy consumption of repairs, and the evaluation value of the construction scale of the building plan, and comprehensively analyzes to obtain the evaluation value of the carbon emission degree in the operation stage. In this formula, the electricity consumption, the number of repairs, the energy consumption of repairs, and the evaluation value of the construction scale of the building plan affect each other. For buildings with higher electricity consumption, the energy consumption for equipment repair is greater. For example, for a data center with huge electricity consumption, when servers and other equipment fail and need to be repaired, high-power detection equipment needs to be used, and the replaced components are also energy-intensive, which will lead to an increase in the energy consumption of repairs. The more repair times, the more energy consumed during the repair process, and the greater the energy consumption of repairs. By comprehensively analyzing the electricity consumption, the number of repairs, the energy consumption of repairs, and the evaluation value of the construction scale of the building plan, the evaluation value of the carbon emission degree in the operation stage can be accurately obtained, which quantitatively reflects the carbon emission intensity of the carbon emission site in the operation stage.

[0067] Specifically, the evaluation value of the carbon emission degree of this carbon emission site in the current stage is obtained by processing the carbon emission data in the construction stage of this carbon emission site. The specific analysis process is as follows: Obtain the energy consumption of critical raw material production, the number of critical transport vehicle dispatching, the electricity power of critical construction equipment, and the operation time of critical construction equipment from the urban carbon emission database; According to the carbon emission data in the construction stage of each carbon emission site, comprehensively analyze to obtain the evaluation value of the carbon emission degree of each carbon emission site in the current stage.

[0068] It should be understood that in this embodiment, the energy consumed in the production of raw materials in the construction stage, such as the coal and electricity consumed in the production of steel and cement; the number of transport vehicle dispatching, the more vehicles transporting building materials, the greater the carbon emissions such as tail gas emissions; the electricity power of construction equipment and its operation time, the greater the power and the longer the operation, the higher the power consumption, and the carbon emissions also increase. By comparing and analyzing the carbon emission data in the construction stage of a certain carbon emission site, the carbon emission degree of this carbon emission site in the current stage can be obtained.

[0069] Specifically, the evaluation value of the carbon emission degree of this carbon emission site in the current stage is obtained by processing the carbon emission data in the operation stage of this carbon emission site. The specific analysis process is as follows: Obtain the critical electricity consumption, the critical number of repairs, and the critical energy consumption of repairs from the urban carbon emission database; According to the carbon emission data in the operation stage of each carbon emission site, comprehensively analyze to obtain the evaluation value of the carbon emission degree of each carbon emission site in the current stage.

[0070] It should be understood that in this embodiment, the electricity consumption after the building is put into use in the operation stage is recorded, such as daily lighting, elevators, air conditioners, etc. all rely on electricity; the number of repairs and the energy consumption during the repair process, repairs involve material replacement and equipment operation, and carbon emissions will also be generated. By comparing and analyzing the carbon emission data in the operation stage of a certain carbon emission site, the carbon emission degree of this carbon emission site in the current stage can be obtained.

[0071] Specifically, carbon emission early warning is carried out according to the carbon emission degree evaluation value of each carbon emission site in the current stage and the carbon emission degree evaluation threshold of each carbon emission site in the current stage. The specific analysis process is as follows: compare the carbon emission degree evaluation value of each carbon emission site in the current stage with the carbon emission degree evaluation threshold of each carbon emission site in the current stage; if the carbon emission degree evaluation value of a certain carbon emission site in the current stage is greater than or equal to the carbon emission degree evaluation threshold of the carbon emission site in the current stage, then mark this carbon emission site as a high carbon emission site; if the carbon emission degree evaluation value of a certain carbon emission site in the current stage is less than the carbon emission degree evaluation threshold of the carbon emission site in the current stage, then mark this carbon emission site as a low carbon emission site.

[0072] It should be understood that in this embodiment, the carbon emission degree evaluation value of each carbon emission site in the current stage is compared with the carbon emission degree evaluation threshold of each carbon emission site in the current stage. If the carbon emission degree evaluation value of a certain carbon emission site in the current stage is greater than or equal to the carbon emission degree evaluation threshold of the carbon emission site in the current stage, it means that the reasonable range of carbon emissions has been exceeded, and such sites will be marked as high carbon emission sites; if the carbon emission degree evaluation value of a certain carbon emission site in the current stage is less than the carbon emission degree evaluation threshold of the carbon emission site in the current stage, it indicates that the carbon emission is in a relatively good state, and such sites will be marked as low carbon emission sites, that is, the basic requirements of the city for building carbon emission control are met in the current stage.

[0073] Count each high carbon emission site and give an early warning for the high carbon emission site.

[0074] It should be understood that in this embodiment, the early warning levels (such as red early warning, orange early warning, yellow early warning, etc.) are further divided according to the degree to which the carbon emission degree evaluation value of the high carbon emission site exceeds the evaluation threshold, so as to reflect the severity and urgency of carbon emissions. The early warning information release channels, such as the enterprise internal notification system, email, SMS platform, social media, etc., ensure that the early warning information can be conveyed to relevant personnel in a timely and accurate manner. The early warning information should include the name of the high carbon emission site, the carbon emission degree evaluation value, the early warning level, the possible impacts and the recommended countermeasures, etc. According to the formulated early warning strategy, select the appropriate release channel and release the early warning information to relevant personnel in a timely manner. For each high carbon emission site, formulate specific emission reduction measures and action plans, such as optimizing the production process, improving energy utilization efficiency, introducing clean energy, etc., ensure that the formulated countermeasures are effectively implemented, and regularly monitor and evaluate the implementation situation, and adjust and optimize the measures in a timely manner. Continuously monitor the high carbon emission sites and track the changes in their carbon emission situations, so as to adjust the early warning strategy and countermeasures in a timely manner. Establish an early warning feedback mechanism to encourage relevant personnel to give feedback on the accuracy of the early warning information and the effectiveness of the countermeasures, so as to continuously improve and optimize the early warning process.

[0075] The urban carbon emission database is used to store various data information related to urban carbon emissions, covering the critical population quantity, critical urban area, critical population density, critical building density, critical raw material production energy consumption, critical number of transportation vehicle scheduling, critical power consumption of construction equipment, critical operation time of construction equipment, critical power consumption, critical number of repairs and critical repair energy consumption, etc. The data in the urban carbon emission database can be obtained from channels such as the geographical information system (GIS) data of the urban planning department, the project database of the construction industry, the energy consumption statistics data of the energy supply department, the vehicle operation data of the transportation department, and the carbon emission monitoring data of relevant environmental monitoring agencies.

[0076] Refer to Figure 2 As shown in

[0077] The data acquisition module is used to count the carbon emission sites in the urban construction area, collect the building planning data and life cycle carbon emission data of each carbon emission site, and obtain the urban carbon emission impact parameters. The life cycle carbon emission data includes the carbon emission data in the construction stage and the carbon emission data in the operation stage.

[0078] A threshold correction module is used to process the urban building carbon emission thresholds for each stage based on the urban carbon emission impact parameters, and correct the urban building carbon emission thresholds for each stage according to the building planning data of each carbon emission site, so as to obtain the carbon emission degree evaluation thresholds of each carbon emission site at the current stage.

[0079] An evaluation and early warning module is used to process the carbon emission degree evaluation values of each carbon emission site at the current stage based on the life cycle carbon emission data of each carbon emission site, and conduct carbon emission early warning according to the carbon emission degree evaluation values of each carbon emission site at the current stage and the carbon emission degree evaluation thresholds of each carbon emission site at the current stage.

[0080] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. As long as it does not deviate from the structure of the present invention or exceed the scope defined by the present invention, it should fall within the protection scope of the present invention.

Claims

1. Urban low-carbon and near-zero carbon analysis method based on life cycle assessment, characterized by: include: Count the carbon emission sites in the urban building area, collect the building planning data and life cycle carbon emission data of each carbon emission site, and obtain the city's carbon emission impact parameters, where the life cycle carbon emission data includes the carbon emission data of the construction phase and the carbon emission data of the operation phase; The carbon emission thresholds of urban buildings at each stage are obtained by processing the influencing parameters of urban carbon emissions, and the carbon emission thresholds of urban buildings at each stage are corrected according to the building planning data of each carbon emission site to obtain the carbon emission assessment thresholds of each carbon emission site at the current stage; According to the life cycle carbon emission data of each carbon emission site, the carbon emission level assessment value of each carbon emission site at the current stage is obtained, and carbon emission warning is carried out according to the carbon emission level assessment value of each carbon emission site at the current stage and the carbon emission level assessment threshold of each carbon emission site at the current stage.

2. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 1 is characterized by: The building planning data and life cycle carbon emission data of each carbon emission site are collected, and the city carbon emission impact parameters are obtained. The specific analysis process is as follows: The building planning data includes the building construction area and the average building construction height; The parameters affecting urban carbon emissions include population, urban area and building area; Carbon emission data during the construction phase include energy consumption in raw material production, number of transport vehicles dispatched, power consumption of construction equipment, and operation time of construction equipment; Carbon emission data during the operation phase includes electricity consumption, number of maintenance times and maintenance energy consumption.

3. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 2 is characterized by: The carbon emission thresholds of urban buildings at each stage are obtained by processing the urban carbon emission impact parameters. The specific analysis process is as follows: Get the critical population, critical urban area, critical population density and critical building density from the urban carbon emission database; According to the urban carbon emission impact parameters, a comprehensive analysis is performed to obtain an urban building carbon emission index, which is used to quantitatively evaluate the reference carbon emission level of urban buildings; The carbon emission thresholds of urban buildings at each stage are obtained by matching the urban building carbon emission index.

4. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 2 is characterized by: The carbon emission thresholds of urban buildings at each stage are corrected according to the building planning data of each carbon emission site to obtain the carbon emission level assessment thresholds of each carbon emission site at the current stage. The specific analysis process is as follows: Obtain the critical building construction area and critical building construction average height from the urban carbon emission database; The building planning scale assessment value of each carbon emission site is obtained by processing the building planning data; According to the building planning and construction scale assessment value of each carbon emission site, the urban building carbon emission threshold at each stage is corrected to obtain the carbon emission level assessment threshold of each carbon emission site at the current stage.

5. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 2 is characterized by: The carbon emission data of each carbon emission site in the life cycle is processed to obtain the carbon emission level assessment value of each carbon emission site in the current stage. The specific analysis process is as follows: Obtain the life cycle stage of each carbon emission site; If the life cycle stage of a carbon emission site is the construction stage, the carbon emission data of the construction stage of the carbon emission site is processed to obtain the carbon emission level assessment value of the carbon emission site at the current stage; If the life cycle stage of a carbon emission site is the operation stage, the carbon emission data of the operation stage of the carbon emission site is processed to obtain the carbon emission level assessment value of the carbon emission site at the current stage; The carbon emission level assessment value of each carbon emission site at the current stage is obtained by statistics, and the carbon emission level assessment value is used to quantitatively assess the carbon emission level of the carbon emission site at a certain life cycle stage.

6. The urban low-carbon and near-zero carbon analysis method based on life cycle assessment according to claim 5 is characterized by: The carbon emission data of the carbon emission site during the construction phase is processed to obtain the carbon emission level assessment value of the carbon emission site at the current phase. The specific analysis process is as follows: Obtain critical raw material production energy consumption, critical transport vehicle dispatch number, critical construction equipment power consumption and critical construction equipment operation time from the city carbon emission database; Based on the carbon emission data of each carbon emission site during the construction phase, a comprehensive analysis is conducted to obtain the carbon emission level assessment value of each carbon emission site at the current stage.

7. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 5 is characterized by: The carbon emission data of the carbon emission site in the operation stage is processed to obtain the carbon emission level assessment value of the carbon emission site in the current stage. The specific analysis process is as follows: Obtain critical electricity consumption, critical maintenance times, and critical maintenance energy consumption from the city carbon emission database; Based on the carbon emission data of each carbon emission site during the operation phase, a comprehensive analysis is conducted to obtain the carbon emission level assessment value of each carbon emission site at the current stage.

8. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 5 is characterized by: The carbon emission warning is performed according to the carbon emission level assessment value of each carbon emission site at the current stage and the carbon emission level assessment threshold of each carbon emission site at the current stage. The specific analysis process is as follows: Compare the carbon emission level assessment value of each carbon emission site at the current stage with the carbon emission level assessment threshold of each carbon emission site at the current stage; If the carbon emission level assessment value of a carbon emission site at the current stage is greater than or equal to the carbon emission level assessment threshold of the carbon emission site at the current stage, the carbon emission site is marked as a high carbon emission site; If the carbon emission level assessment value of a carbon emission site at the current stage is less than the carbon emission level assessment threshold of the carbon emission site at the current stage, the carbon emission site is marked as a low-carbon emission site; Count all high-carbon emission sites and issue early warnings for them.

9. The urban low-carbon and near-zero-carbon analysis method based on life cycle assessment according to claim 1 is characterized by: The carbon emission assessment value of each carbon emission site at the current stage is obtained in the following way: In the formula, γ i represents the carbon emission level assessment value of the i-th carbon emission site at the current stage, e represents the natural constant, α i Indicates the life cycle stage of the i-th carbon emission site. When α i = 0, indicating that the life cycle stage of the i-th carbon emission site is the construction stage. i =1 indicates that the life cycle stage of the i-th carbon emission site is the operation stage, S i represents the energy consumption of raw material production at the i-th carbon emission site, N i represents the number of transport vehicles dispatched at the i-th carbon emission site, W it represents the power consumption of the t-th construction equipment at the i-th carbon emission site, T it represents the operation time of the tth construction equipment at the i-th carbon emission site, S0 represents the preset critical raw material production energy consumption, N0 represents the preset critical number of transport vehicles dispatched, W0 represents the preset critical construction equipment power, T0 represents the preset critical construction equipment operation time, ε1 represents the carbon emission data index impact weight corresponding to the preset raw material production energy consumption, ε2 represents the carbon emission data index impact weight corresponding to the preset number of transport vehicles dispatched, ε3 represents the carbon emission data index impact weight corresponding to the preset construction equipment power, ε4 ​​represents the carbon emission data index impact weight corresponding to the preset construction equipment operation time, D i represents the electricity consumption of the ith carbon emission site, X i represents the number of repairs of the i-th carbon emission site, Y i represents the maintenance energy consumption of the i-th carbon emission site, D0 represents the preset critical power consumption, X0 represents the preset critical maintenance times, Y0 represents the preset critical maintenance energy consumption, Indicates the impact weight of the carbon emission data index corresponding to the preset electricity consumption. Indicates the impact weight of the carbon emission data index corresponding to the preset number of maintenance times, It represents the impact weight of the carbon emission data index corresponding to the preset maintenance energy consumption, i represents the number of the carbon emission site, i=1, 2, 3, ..., m, m represents the total number of carbon emission sites, t represents the number of the construction equipment, t=1, 2, 3, ..., k, k represents the total number of construction equipment.

10. A system using the urban low-carbon and near-zero carbon analysis method based on life cycle assessment as claimed in any one of claims 1 to 9, characterized in that: include: Data acquisition module, threshold correction module and evaluation and early warning module; The data acquisition module is used to obtain various carbon emission sites by counting urban building areas, collect building planning data and life cycle carbon emission data of each carbon emission site, and obtain urban carbon emission impact parameters. The life cycle carbon emission data includes carbon emission data in the construction phase and carbon emission data in the operation phase. The threshold correction module is used to obtain the urban building carbon emission thresholds at each stage according to the urban carbon emission influencing parameters, and to correct the urban building carbon emission thresholds at each stage according to the building planning data of each carbon emission site, so as to obtain the carbon emission degree assessment threshold of each carbon emission site at the current stage; The assessment and early warning module is used to obtain an assessment value of the carbon emission level of each carbon emission site at the current stage based on the life cycle carbon emission data of each carbon emission site, and to issue a carbon emission early warning based on the assessment value of the carbon emission level of each carbon emission site at the current stage and the carbon emission level assessment threshold of each carbon emission site at the current stage.

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